An elevation is different. It shows the face of something, or perhaps more correct, the projection of an object/s to a plane. But my testing suggests it produces SECTIONS, not elevations.
Yes, you can use abbreviations in tables and figures. All abbreviations used in tables and figures should be defined in the table note or figure caption, respectively, even though the abbreviations will be also be defined in the text if they are used there.
ALLOY DATABASE (definitions) This page defines various terms used in the Alloy database. Pearson Symbol. The Pearson symbol indicates a type of structure. The notation is in the form pTnn. Here p labels the point symmetry and takes values a,m,o,t,h,c for asymmetric, monoclinic, orthorhombic, tetragonal, hexagonal and cubic.